Improvement in furniture-springs



J. FLINN.

FURNITURE SPRING.

$10,171,369. Patented Dec. 21,1875.

UNITED STATES PATENT OFFICE JOHN FLIN N OF 7 PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT lhl FURNITURE-SPRINGS.

Specification forming part of Letters Patent N 0. 171,369, dated December 21, 1875; application filed October 11, 1875.

To all whom it may concern:

Be it known that I, JOHN FLINN, of the city lessen the space required below the slat in my formerinvention for the clamping-coils, and also to render the application of the clamps to the slat more easily accomplished, by constructing the clamping-coils so that the same will not extend below the plane of the under side of the slat, and constructing the free end of the wire of the clamping-coil in the form of a hook, which will slide against the under side of the slat without cutting into it in applying the spring to the slat, and yet will hold the spring securely in place upon the slat, as will be fully described and explained with reference to the accompanying perspective drawing of the whole spring applied to a transverse section of a slat.

A is the usual conical coil-spring resting on its smaller end coil a, the wire-of which extends tangentially from said coil directly across the upper side of the slat, where it is bent into a series of small horizontal coils, B, which extend downward across the edge of the slat G from the upper to the lower surfaces of said slat, and from this point the 'wire is extended across the under side of the slat to a short distancebeyond the center of the bottom coil of the spring A, where it is cut 015%, and the 7 end remaining is-bent upward into a small hook, I), so that the upper side of the extreme end of the wire of said hook will press strongly against the under side of. the slat at a point directly under the center of the bottom coil a of the spring A.

It will be readily seen that as the clampingcoils B are coiled horizontally at the edge of will becomelindented into the under surface of the slat sufficiently to hold the spring in place, and at the same time occupies so 1itt]e of the space below the said slat as not to be I objectional in applying it to the slats of sofas and other spring-seats, and holds the spring A firmly in itsproper position on the slat G.

I claim as my invention The coiled-wire spring, having the tangential extension of the wire of the bottom coil to,

the horizontal coils B, the clamping-bar .b,

and the hooked end b, the said parts being constructed and arranged in relation to each other, substantially as-and for the purposes described.

, JOHN FLINN.

Witnesses BENJ. MORISON, WM. H. MORISON. 

